Function sys_read

user/src/syscall.rs:63–68

(fd: usize, buffer: &mut [u8])

}

pub fn sys_read(fd: usize, buffer: &mut [u8]) -> isize {
    syscall(
        SYSCALL_READ,
        [fd, buffer.as_mut_ptr() as usize, buffer.len()],
    )
}

pub fn sys_write(fd: usize, buffer: &[u8]) -> isize {
    syscall(SYSCALL_WRITE, [fd, buffer.as_ptr() as usize, buffer.len()])